Drilling-machine.



J. w. LUNDGRN. DRILLING MACHINE.

APPLIOATION FILED APB.. 30, 1906. RENEWED JUNE 1B, 1910.

Patented Nov. 1,4 1910.

. fm aff/11M gunrvntur nm Mw.

9 ,Y um,...

m www 9 f a f J. W. LUNDGREN.

DRILLING MACHINE.

APPLICATION FILED APB. 30, 1906. RENBWBD JUNE 18, 1910.

Patented Nov. 1, 1910.

. 4 BHEETs-BHBBT 2.

Ol/ gunrutnv @y In-'s gttorncg `V Ldgdau/J'tdx..

J. WJLUNDGREN.

DRILLING MACHINE.

Patented Nov. 1, 1910.

4 SHEBTS-S HEET 3.

APPLICATION FILED APR. 30, 1906. RENBWBD JUNE 18, 1910. 974,406.

J. W. LUNDGREN.

DRILLING MACHINE.

APPLIoATIoN FILED APR. ao, 1906. RENBWBD JUN: 1a. mo.

, Patented Nov. 1, 1910.

4 SHEETS-SHEET 4.

UNITED STATES' PATENT oFFroE.

` JOHN W. LUNDGREN, F DULUTH, MINNESOTA.

DBILLING-MACHINE.

Specication o! Letters Patent.

Patented Nov. 1, 1910.

Application filed April 30, 1906, Serial N o. 314,449. Renewed .Tune 18, 1910. Serial No. 567,688.

To all whomj'it may concern:

Beit known that I, JOHN W. LUN Dennis, a citizen of.l lthe United States', residin at Duluth, in the county of St. Louis and tate of Minnesota, have invented certain new and useful Improvements in Drilling-Machines; and Ido hereby declare the following to be` a`full,'clear, and exact description of the invention, such as will enable others skilled 1n the art to which it appertains to make and use the same. I l My invention relates to drilling machines,

and has for its object the provision of means `for feeding to the drills the material or ar ticles, to be drilled, adjustable means for carrying-.the drills, whereby the position l' of the drillsmay be shifted ltransversely to the direction of movement of the articles "to be drilled, and meansl for locking said adjustable meansfin ne or another prede- '.termined position with respect tofhe article to be drilled.

It includes certain other. constructions, combinations, and arrangements of parts hereinafter described and claimed.

In the drawings Figure 1,' is a perspective view of'iny said invention, omitting the tables orapproachesupon. which'the ar- 1 ticle to be drilled comes to, or 'departs from so the main machine. Fig. 2,l is a fragmentary central vertical sectionalA view of the lpreesure yoke and, partly in. elevation, of' the verticallv movable support for the article to be drilled, and of the lower ends` of the drills. Fig. 3, is a fragmentary vie'w,'partly in vertical section and 'partly in elevation,

of guide blocks on the head frame', and of' which .is above, the vline C-D of Fig. 4.' Fig. 6, is a. side 'elevation partly in vertical section-and partly broken away, of my said invention. Fig. 7, isan enlarged side ele-` vation of the lever .and dog for locking the head frame against transverse movement. Fig. 8, is a' section of said lever and dog on 4the line E--F of Fig-7. Fig. 9, is a side l, 4 elevation, partly in section yand partly broken away, of my said invention, omitting the approaches. -Fig.l 10, is an' enlarged central vertical sectional view of one of the'drills and of the supports therefor. Fig. 11, is a plan view of a portion of an unfinished match-carrying belt in which my invention is ada ted to drill the match or splintLholdino ho es.

n the drawings, 1 is a main frame, preferably comprising several -members havlng a fixed or stationary relation to each other and adapted to su port the movable parts of the machine. aid `frame 1 preferably includes brackets 1 in which` is mounted an axle, or hinge pin l", u on which axle is journaled a transverse movable head frame 2, which is adapte 'in lowered position to rest upon a suitable stop, which may consist of the upper end of the main frame, as at l, and said head frame may be locked in such lowered position by slidm tongues 3, mounted in said main frame an adapted to overlap a portion of said frame 2. The tongues 3 are preferably dovetailecl into the frame 1, or vice versa and may be locked against movement by set screws 3". Pivot-ally secured at one end to said frame 2, is a ling 4, whichat its other end isloosely pivoted to a lever 5, which lever 5 is pivotally secured to, or fulcrumed upon the frame 1, as at 5. lVhen .the frame 2 is swung upwardly andbackwarclly, the pivotal relation between the` link 4 and the lever 5 is suspended by the separation of those members, but when the frame 2 is lowered again the pivotal relation between the link 4 and lever 5 should be restablished by the reinsertion of the ivot pin, carried by either member, into the aperture therefor formed in the opposin member. By operating said lever 5, the rame 2 may be drawn in one direction or' thrust in the opposite direction transversel of said frame 1 and along said axle 1". ivotally mounted upon said frame 1, is a lever 6 carrying a do 6l provided with a tooth or teeth`adapte in operation to project into one or another of the indentations formed in a serrated lug 2l;A

formed .on 'said frame 2, or vice versa,to

said frame 2 in one or another redetermined position to which it has een ad- 'usted transversely of the machine. Said lever may be secured in operative position by a spring 7 fixed at one end to the frame 1 and enga ing a groove in the end of the lever 6. T e tendenfcy of the free end of the spring 7 when un tension by engageengagement with t e lug 2a. Mounted in ment with the lever 6 is, in the formillustrated,4 to move downwardly, thus forcmg that part of said lever, which is on the opposite side of the pivotal axis, upward; and,

4since the pivotal axis of the lever 6 is' eccentric to the dog 6, said dog is b -the action of the: sprin `and lever move 1nt0 said frame 2, are' journal boxes 8 secured therein against vertical movement by a cover 9 bolted to the frame 2 and/against longitudinal movementy by pins as 9a (Fig. :1) vdirected through the cover 9 and into y one or more gear wheels 10a and one or more belt Wheels 10b. Secured to, or formed on said frame 2, are guide blocks 11, and 11a spaced apart, and, supported thereby, are bars 12 an'd 13, parallel with said shaft 10. The bars 12 and 13 are apertured to receive a spindle or spindle 14, extendin therethrough and provided. with pinions 14 meshing with corresponding onesof said ears 10a. Said spindles are prevented rom vertical movement, in said bars, by any suitable means or in any suitable manner, as preferably by collars 14214c bearing upon or against oneof said bars, which collar 14 may be inte ral with the pinions 14.

Mountedon saldframe I2, between said guide blocks', is a .pressure yoke or yoke-shaped` pressure foot l5, Which is'apertured to receive the drills 16 `which drllls are secured in any suitable manner in said spindles. Thev central portion of said yoke extends transversely of said machine and-the vertical arms extend .upj between the respectively contiguous guide blocks, but not to the upper end of the guide blocks.

The-upper end of-the yoke are recessed to receive a spring 15a (Fig. 2) and a plun ger 15?, which pl-un er bears upon the spring and a ainst the en ofthe bar 12 which bar is pre erably bolted to the upper ends of the gulde blocks.v Thus` the yoke may yield upwardly a ainstthe springs 15a whlch, how-4 ever, ten to hold said yoke down upon the article to be drilled, hereinafter described.

In order to prevent said plunger from jumpingout of the recess in the yoke, the barrel of the plun er is reduced intermediate of its ends, an 4a pin or screw 15 (Fig. 3) is projected throu h the' wall of the yoke and into the space` ormed by the reduction in the barrel. of the plunger.. In order to preyvent the' yoke-from dropping out of the frame 2, when said ramels tilted back, said yoke i'srecessedin the outer face of its side wall, and a screw or 4pin ,15l is projected through the adjoini'n guide block into s aid recess. Said yoke is a so transversely slotted or grooved as at- 15 in its lower face at the points of passage of eachdrill to afford passages for the escape of filings or shavings cut by the drills from the articles to be drilled. Mounted or formed on a cross barv 1t of said framel, is a journal bearing` l in which is journaled the axle 17 of a worm wheel 18, which is provided with a hub 19, said hub 19 has a cam, or inclined plane formed upon its free end upon which rests a vertical y reciprocating yoke or support '2O provided at its center with a hub 20a having a cam face or inclined plane u on its lower end Contactin with the incline plane formed u on the hu 19'. J ournaled in said yoke 20, `1s a shaft 21, carrying a sprocket it to said disk. The shaft 21 extends at each end through sliding journal boxes 20"k mov" able vertically'in guides 20 formed onor secured to sald frame 1, vsaidV shaft also extends through sl'ots' 1h formed in said frame 1, and each end of said shaft is preferably provided with va retaining .collar 20d. There is also mounted on said shaft nearone end thereof agear or cog-wheel 23,keye d thereto. Said shaft is adapted to be rotated bv means of a lever 24 j ournaled upon the shaft and provided -With a splring bolt 24 ada ted to engage one vor, anot er of a series o recesses or a ertures 23 in the hubfof said ear 23. .guard is preferably provided or said gear 23 and preferably comprises a disk 25 provided with a flange 253,]and with a hub 25b`mounted on yand 4keyed to 'a hub projecting from the'adjoin'ing sliding jour-I nal bearing 20". Said flange 2 5a is slotted or partly cut awayI to' permit the passage of i the nose of a dog"26, which 'dog is hinged upon a shoulder or rib formed `on said disk. 25 and is adapted to dip through said slot y and enga e'the teeth of said gear to prevent I the rotatlon of said gearv and of ythe shaft I upon which said gearis mounted. lVhen it l is desired to rotate 'said'shalft 21 the dog 26 is, preferably by manual o eration, disen-- glaged from the teeth, of "sai gear;'the hanle off the lever 24 is then grasped, and the ear and shaft is rotated as-*farl as desired y means of said lever.

` i Theupper 'end of the'yoke-QO has formed thereon, or secured thereto across bar 20 and a superimposed bar 20t inthe upperface of which bar 20' transversely of the same, are

-formed one or more recesses orl grooves to receive the lowerends of. the drills after they have passed through the article to be drilled. The number of -said recesses will correspond to the number, of holes to be drilled in one line transversely of the ma- -chine and they are so spaced that a recess will register with each drill in whatsoever drilling position said frame 2 may be locked bythe dog 6a. Said grooves are also adapted to operate as passages for the escape of filings or shavings cut by the drills from the article to be drilled. It is obvious that without de arting from' the spirit and scope of my sai invention, said recesses may eX- tend through said bar vertically instead of being formed as transverse grooves in the upper face thereof. Pivotally secured tothe upper end of said yoke are oppositely directed tables 27 and 28 respectively, which at their opposite ends are pivotally supported uponlegs, as at 27 a, and at 28, respectively. Thev articles to be drilled are preferably moved upon the table 27 toward the yoke 20 and away from it upon the table'28. Journaled in suitable bearings upon said frame 1 is a shaft 29 upon which is formed or secured a worm 3,0, adapted to engage the gear 18. A suitable belt wheel or wheels 31 lare keyed to said shaft 29 to turn the same. A suitable belt Wheel 10"` is also keyed to the shaft 10, which is belted in operation to a belt wheel on the shaft 29 which shaft 29 is driven through a belt wheel 30l in any suitable manner by any suitable form of motor not. shown; but any suitable arrangement of gears, not shown, or other equivalent,'may be substituted for the belt wheels.

I will now describe the operation of my inventionwhen employed in drilling splintreceiving holes, in a match carrying belt. The .belt is first formed by uniting the slats 33 to the links 34 and engagin the links together., The belt is then stretc ed along the Vtable 27, and ifdesired, or of great length,

part of the belt, toward the rear end of said table may be rolled and it may be gradually unrolled as it is fed to the drills. 'The :torward end of the belt to be drilled is then passed between the bar 20t and the central part of the yoke 15, and at the same time the links of said end of said belt are dropped upon the tleeth of the sprocket wheels 22, and 22?. During `this preparatory operation,- the frame 2, may be tilted upwardand backward upon the shaft as at 2b (Fig. 9), and may be restrained from tilting toofar by a stop link 35, of'vwell known construction. If not already lowered, the frame 2 is thenv lowered so that the drills bear upon or come near to the ,surface of the first slat to be drilled. The fram-e 2 is preferably at irst locked at one end of its path of transverse travel, and the yoke20 1s at its lowest position. The power belts are then connected and the4 machine is started. The worm now turns the gear 18,l and the cam on the hub 19 operating against'the cam 20 .raises the yoke which carries up the slat l 'fthey penetrate the same.4 The shaft 2 1 of against the rapidly revolving drills until the dog 6 is again engaged and the'operation is continued to bore a second series of holes in the same Slat and in alinement with the first series of holes. Y

It should be remarked that the construction of the cams on the hub 19 and the cam 20 is preferably such that the inclined planes only occupy a portion of the circumference of the hubs and that therefore the gear will turn some distance before the yokev or vertically movable support 20, commences to rise. This aords time Ifor shifting the frame 2; otherwise, the belts connecting t-he machine with the motor could be disengaged to afford time for such shifting. After boring the second series of holes, the frame 2 may be again shifted and a third series of holes bored in the same slat .in alinement with the other holes therein. The machine may be constructed` if desired, to bore additional series of holes in the same manner. After all the holes are bored that are desired in one slat, the dog 2G `is disengaged and the lever 24 is operated to partly rotate said shaft so as to bring another slat in position for being drilled. The dog 26 is then rengaged and the operations of drilling the second slat are gone through with; and so on, until the entire splint carrying belt has been drilled.

Since it may sometimes be desirable to arbitrarily raise the yoke 20, independently of the'usual motive means, I provlde the lever 36 (Fig. 9) which extends under the lower end of the axle 17 depending from the yoke 20 loosely through the center of the gear 18 and forming the axle of the gear 18. Said lever is adapted to bear against said post and so raise said yoke 20.

What I claim as my invention is,

1. rlhe combination` of a main frame,I a

support mounted in said'frame, a transying the drills, and a yielding pressure yoke carried by said head frame andadapted to bear upon the article to be drilled. a

2. The combination. of a frame, a support mounted thereon, a transversely movable drill-carrying means mounted onsaid frame,

tions and at an ange to the direction of beneath said means `for laterally positioning said carry,- ling means,la yielding presser 'o ot mounted on said drill-carrying means and having passages formed therein for the drills, means for exerting pressure-on said foot to press 'the same on the article or articles to be drilled, means for rotating said drills,'and means adapted'to feed across said support resser foot the article or art-icles to be dril ed.

3. In a drilling machine, the combination f wheel. and concentric therewith keyed to a shoulder orhub formed on onev ofsaid slides, and adOg pivoted on said guard, and

ada ted tof-engage one or another of the teet of said w eel, to prevent the rotation `of the same.

i' L nected at 'their opposing ends to said support:

4.near its upper end.v

4. Ina drilling machine, the combination of a frame, a vertically movable support mounted on or in said frame, tables or guides approachingsaid sup ort in opposite directravel of said support and pivotally con- 5.1M drilling machine, the' Combinati@ of a main frame, a head frame hinged thereon. and adapted to swing upwardly, slides `mounted on the main frame and adapted in operation to overlap a portion of the head frame to hold the same' in its lowered position. v

6. In adrilling machine, the combination of a main frame, a head frame hinged thereon and adapted to swingu wardly and also adapted to move transverse y of the machine parallel to the axis of its hinge, a lever fulcrumed ,on said main frame, a link-connect ing said lever to said headframe, whereby said head frame' may be moved transversely of said machine, ,a lever pivoted lto said main frame andcarrying teeth adapted to engage teeth formed on said head frame for locking said head frame against transverse movement. f

o 7 In a drilling machine, the combination of a head frame having guides secured or formed thereon, a drill carrying bar mounted on said frame, a pressure yoke apertured for the passage of the drills and mounted between said guides, said yoke being recessed in its upperends and grooved in its lower face from each drill wardly, a spring in eachof said recesses, a plunger in each of said recesses above the springs and adapted to bear -fat one end against a lfixed abutment, and at the opposite end against said spring to depress said yoke, and a pin or screw extendin through one of the adjoining guidesi an into'an elongated recess in the adjoining arm of the yoke to limit the movement of said yoke.

8. In a drilling machine for drilling match-holding holes in 'the slats of a match carrying belt, the combination of a main frame, a vertically movable support mounted thereon, approaches pivoted to said support 4for-conveying the'belt to be operated on, sprocket wheels mounted onsaid support and adapted to enga e the links of the belt to be operated on an to effect anintermittent movement of saidbelt along said aproaches, means for raising said support vintermittently, means for actuating said sprocket wheels, a head frame mounted on said main frame and adapted to be moved in a transverse direction, means forl moving said head frame transversely of the line of travel of the belt to be drilled, means for locking said head frame in a predetermined position, a series of drills carried by said head frame and adapted to `bore int'o the slats of said belt when the same are carried up against the drills by the said vertically presence of two witnesses.

' JOHN W. LUNDGREN.

Witnesses:

'JAMES T. WATSON,

C. T. CRANDALL.

signature, in

passagey fordrills. In testimony whereof I hereunto aix my 

